pid is not printing in shell script

arun natarajan · 08-14-2015, 02:09 AM

Hi,

PID is not printing when running the same cmd in shell script. plz help.

[root@localhost ~]# nice -4 cat /dev/zero > /dev/null &
[1] 4913
[root@localhost ~]#
[root@localhost ~]# cat ss
nice -4 cat /dev/zero > /dev/null &
[root@localhost ~]# ./ss
[root@localhost ~]#

HMW · 08-14-2015, 02:58 AM

Quote:

Originally Posted by arun natarajan

plz help.

With what? This is normal.

If you want to get the process id of a command, check out $!

A "bash get process id" with DuckDuckGo yields:
http://stackoverflow.com/questions/9...-and-exit-code

And if you read this, it will be easier to get help in the future...
http://catb.org/~esr/faqs/smart-questions.html

Best regards,
HMW